sensor networks generally consist of a very great number of sensor nodes which will be spread into a vast environment and aggregate data out of it. the sensor nodes are afflicted with some limitations as follows memory, reception, communication as well as calculation capability, and battery power. the transmission of a great amount of extra data increases data transmission and proportionally in...

Wireless sensor systems aid scientific studies by instrumenting the real world and collecting measurements. Given the large volumes of measurement collected by sensor systems, one problem arises, namely an automated approach to identifying the “interesting” parts of these data sets, or anomaly detection. A good anomaly detection methodology should be able to accurately identify many types of an...

A systematic approach is developed as a means of characterizing optimal and conventional space-time detection of a Gaussian signal in colored Gaussian flow noise with line arrays. Discrete arrays of sensors, as well as continuous finite observation intervals, are considered. Using the likelihood ratio as a starting point, exact solutions are formulated, specifying the optimal instrumentation fo...

Biosensors based on microcantilevers have become a promising tool for directly detecting biomolecular interactions with great accuracy. Microcantilevers translate molecular recognition of biomolecules into nanomechanical motion that is commonly coupled to an optical or piezoresistive read-out detector system. Biosensors based on cantilevers are a good example of how nanotechnology and biotechno...

Today's air pollution sensor networks pose new challenges given their heterogeneity of low-cost sensors and high-cost instrumentation. Recently, with the advent graph signal processing, network measurements have been successfully represented by graphs depicting relationships between sensors. However, one main problems these is reliability, especially due to inclusion sensors, so detection ident...

The IEEE (Institute of Electrical and Electronics Engineers) 1451 smart transducer interface standards provide the common interface and enabling technology for the connectivity of transducers to microprocessors, control and field networks, and data acquisition and instrumentation systems. The standardized Transducer electronic Data Sheet (TEDS) specified by IEEE 1451.2 allows the self-descripti...

Wireless sensor networks have been widely considered as one of the most important 21th century technologies and are used in so many applications such as environmental monitoring, security and surveillance. Wireless sensor networks are used when it is not possible or convenient to supply signaling or power supply wires to a wireless sensor node. The wireless sensor node must be battery powered.C...

Wireless Sensor Networks are the new generation of networks that typically are formed great numbers of nodes and the communications of these nodes are done as Wireless. The main goal of these networks is collecting data from neighboring environment of network sensors. Since the sensor nodes are battery operated and there is no possibility of charging or replacing the batteries, the lifetime of ...

Given the explosion in number and types of sensor nodes, the next generation of sensor management systems must focus on identifying and acquiring valuable information from this potential flood of sensor data. Thus an emerging problem is deciding what to produce, where, for whom, and when. Identifying and making tradeoffs involved in information production is a difficult problem that market-base...